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<?php |
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declare(strict_types=1); |
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namespace FondBot; |
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use Closure; |
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use SplFileInfo; |
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use ReflectionClass; |
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use Illuminate\Support\Str; |
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use FondBot\Contracts\Activator; |
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use FondBot\Conversation\Intent; |
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use FondBot\Events\MessageReceived; |
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use Symfony\Component\Finder\Finder; |
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use FondBot\Conversation\FallbackIntent; |
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class FondBot |
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{ |
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/** |
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* The registered drivers. |
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* |
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* @var array |
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*/ |
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private $drivers = []; |
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/** |
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* The registered channels. |
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* |
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* @var array |
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*/ |
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private $channels = []; |
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/** |
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* The registered intents. |
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* |
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* @var array |
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*/ |
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private $intents = []; |
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/** |
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* Fallback intent. |
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* |
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* @var string |
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*/ |
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private $fallbackIntent = FallbackIntent::class; |
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/** |
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* Context time to live in seconds. |
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* |
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* @var int |
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*/ |
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private $contextTtl; |
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/** |
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* Current channel. |
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* |
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* @var Channel |
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*/ |
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public static $currentChannel; |
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public function __construct(array $config) |
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{ |
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$this->contextTtl = $config['context_ttl']; |
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$this->registerChannels($config['channels']); |
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$this->intentsIn($config['intents_path']); |
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$this->fallbackIntent = $config['fallback_intent']; |
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} |
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/** |
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* Get the current FondBot version. |
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* |
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* @return string |
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*/ |
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public static function version(): string |
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{ |
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return '4.0.0'; |
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} |
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/** |
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* Register a driver. |
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* |
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* @param string $name |
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* @param Closure $callback |
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*/ |
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public function addDriver(string $name, Closure $callback): void |
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{ |
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$this->drivers[$name] = $callback; |
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} |
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/** |
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* Get all registered drivers. |
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* |
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* @return array |
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*/ |
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public function drivers(): array |
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{ |
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return $this->drivers; |
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} |
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/** |
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* Get all registered channels. |
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* |
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* @return array |
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*/ |
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public function channels(): array |
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{ |
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return $this->channels; |
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} |
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/** |
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* Get channel by name. |
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* |
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* @param string $name |
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* @return Channel |
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*/ |
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public function channel(string $name): Channel |
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{ |
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return $this->channels[$name]; |
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} |
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/** |
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* Get all registered intents. |
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* |
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* @return array |
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*/ |
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public function intents(): array |
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{ |
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return $this->intents; |
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} |
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/** |
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* Match intent by received message. |
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* |
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* @param MessageReceived $messageReceived |
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* |
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* @return Intent|null |
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*/ |
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public function matchIntent(MessageReceived $messageReceived): Intent |
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{ |
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foreach ($this->intents as $intent) { |
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/** @var Intent $intent */ |
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$intent = resolve($intent); |
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foreach ($intent->activators() as $activator) { |
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if (!$intent->passesAuthorization($messageReceived)) { |
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continue; |
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} |
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if ($activator instanceof Closure && value($activator($messageReceived)) === true) { |
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return $intent; |
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} |
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if ($activator instanceof Activator && $activator->matches($messageReceived)) { |
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return $intent; |
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} |
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} |
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} |
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// Otherwise, return fallback intent |
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return resolve($this->fallbackIntent); |
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} |
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/** |
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* Register the given channels. |
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* @param array $channels |
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*/ |
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private function registerChannels(array $channels): void |
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{ |
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$this->channels = collect($channels) |
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->mapWithKeys(function (array $parameters, string $name) { |
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$driverCallback = $this->drivers[$parameters['driver']]; |
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/** @var Driver $driver */ |
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$driver = $driverCallback(); |
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$driver->initialize(collect($parameters)->except('driver')); |
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return [ |
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$name => new Channel($name, $driver, $parameters['webhook-secret'] ?? null), |
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]; |
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}) |
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->toArray(); |
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} |
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/** |
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* Register all of the intent classes in the given directories. |
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* |
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* @param array $directories |
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*/ |
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private function intentsIn(array $directories): void |
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{ |
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$namespace = app()->getNamespace(); |
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$intents = []; |
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/** @var SplFileInfo[] $files */ |
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$files = (new Finder())->in($directories)->files(); |
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foreach ($files as $file) { |
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$file = $namespace.str_replace( |
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['/', '.php'], |
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['\\', ''], |
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Str::after($file->getPathname(), app_path().DIRECTORY_SEPARATOR) |
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); |
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if (is_subclass_of($file, Intent::class) && !(new ReflectionClass($file))->isAbstract()) { |
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$intents[] = $file; |
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} |
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} |
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$this->intents = $intents; |
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} |
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} |
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